The 456th Bombardment Squadron is one of the two predecessors of the 556th Tactical Air Support Squadron, an inactive United States Air Force unit. Formed in 1985 by the consolidation of the 456th with another inactive bombardment squadron. It has never been active under its most recent designation. The 456th was activated in 1942. After training in the United States with Martin B-26 Marauders, it deployed to the European Theater of Operations, where it served in combat until V-E Day, earning a Distinguished Unit Citation while providing air support during the Battle of the Bulge. Following the war, the squadron returned to the United States and was inactivated. The 456th was activated in the reserve in 1947. In 1951, it was mobilized for the Korean War. Its personnel were used as fillers for other units and it was inactivated again. The other predecessor of the 556th is the 656th Bombardment Squadron, a Strategic Air Command unit that flew Boeing B-47 Stratojets at Chennault Air Force Base, Louisiana from 1953 to 1963. The two squadrons were consolidated as the 556th in 1985. History World War II Organization and training in the United States The 456th Bombardment Squadron was activated at Columbia Army Air Base, South Carolina on 4 August 1942 as one of the four original squadrons of the 323d Bombardment Group. After Phase I training at MacDill Field, Florida with Martin B-26 Marauders, the squadron trained for combat at Myrtle Beach Bombing Range, South Carolina until late April 1943, when the ground echelon departed Myrtle Beach for England, sailing on the on 5 May. The air echelon of the squadron had moved to Baer Field, Indiana in February. At Baer, it received new B-26Cs, then proceeded to the United Kingdom via the north Atlantic ferry route by June. Combat in Europe The squadron began operations with Eighth Air Force in July 1943 as part of the first raid on the European continent by B-26s. When Ninth Air Force moved to the United Kingdom in the fall of 1943, the squadron became part of it. It attacked airports, industrial factories, marshalling yards and military targets in France and the Low Countries. During Big Week the squadron attacked Leeuwarden and Venlo Airfields. The squadron also attacked V-weapons launch sites in France. In preparation for Operation Overlord, the Invasion of Normandy, the 456th attacked coastal defenses and other targets in northwestern France. on